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What is the craziest Audio related idea you have ever had?

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33 minutes ago, sandyk said:

 I didn't want post the whole schematic for copyright reasons, but  they used a Stereo Headphone socket, insulated, Double Pole Double  Throw -Switched , with 330 ohm 1W  series resistors  fitted to the headphone side to protect both the headphones and the listener, as well as give a more suitable output level to the headphones .

https://www.altronics.com.au/p/p0074a-6.35mm-insulated-dpdt-stereo-jack-socket/

 

What's the spec on the resistors, carbon, wire-wound or metal film? This Metal Film from Mouser is rated for 50ppm drift, so when push comes to shove, the resistor may not break down and the image should be pretty good.

 

Also found an article that explains when HPs can be connected directly to power amps, others require resistors as above. Interesting topic.


AS Profile Equipment List        Say NO to MQA

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21 minutes ago, One and a half said:

What's the spec on the resistors, carbon, wire-wound or metal film? This Metal Film from Mouser is rated for 50ppm drift, so when push comes to shove, the resistor may not break down and the image should be pretty good.

 They didn't specify with this one, but all other resistors are 1% MF.

What you have suggested would be ideal.


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

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I got fed up with Roon (specifically its metadata) and learned programming to develop my own music app which i now use on a daily basis :)

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15 hours ago, sandyk said:

 I didn't want post the whole schematic for copyright reasons, but  they used a Stereo Headphone socket, insulated, Double Pole Double  Throw -Switched , with 330 ohm 1W  series resistors  fitted to the headphone side to protect both the headphones and the listener, as well as give a more suitable output level to the headphones .

https://www.altronics.com.au/p/p0074a-6.35mm-insulated-dpdt-stereo-jack-socket/

15W Class A Amplifier p23.jpg


if I gave you medical advice by giving you the chemistry rather than just saying take this pill once a day, would you have any clue what I wanted you to do?


No electron left behind...

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31 minutes ago, AudioDoctor said:


if I gave you medical advice by giving you the chemistry rather than just saying take this pill once a day, would you have any clue what I wanted you to do?

In your case you could simply put the resistor between both of the positive(L&R) banana plugs and the positives (tip and ring) on the 1/4" TRS jack. It all looks more complex than it is. This stuff is available in screw termination as well. There is no NEED to know how to solder.


Forrest:

Win10 i9 9900KS/GTX1060 HQPlayer4>Win10 NAA

DSD>Pavel's DSC2.6>Bent Audio TAP>

Parasound JC1>"Naked" Quad ESL63/Tannoy PS350B subs<100Hz

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1 hour ago, 4est said:

In your case you could simply put the resistor between both of the positive(L&R) banana plugs and the positives (tip and ring) on the 1/4" TRS jack. It all looks more complex than it is. This stuff is available in screw termination as well. There is no NEED to know how to solder.

 In this case though , you would have output coming from the speakers as well, not just the headphones, which is what is needed.

 Silicon Chip magazine obviously thought that their wiring diagram would be adequate enough, even for novices.¬¬


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

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4 hours ago, sphinxsix said:

Actually buying my first audiophile quality system and thinking it would be the last one proved to be maybe not crazy but unrealistic.. :D

 

same...


No electron left behind...

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Just now, sandyk said:

 In this case though , you would have output coming from the speakers as well, not just the headphones, which is what is needed.


I see that mentioned a lot when researching this. It may be headphone/amp specific. Lukasz said nothing about a resistor needed when connecting the Susvara to his 211 Pacific mono block amps. 


No electron left behind...

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1 minute ago, AudioDoctor said:


I see that mentioned a lot when researching this. It may be headphone/amp specific. Lukasz said nothing about a resistor needed when connecting the Susvara to his 211 Pacific mono block amps. 

 The S.C. diagram would enable people to retrofit a headphone jack to existing lower powered Power amplifiers .

With much higher power amplifiers, a simple headphone jack switch would not permit the use of the heavier gauge wiring needed to avoid losses. In that case you would ideally use a heavy duty relay for the switching.


How a Digital Audio file sounds, or a Digital Video file looks, is governed to a large extent by the Power Supply area. All that Identical Checksums gives is the possibility of REGENERATING the file to close to that of the original file.

 

PROFILE UPDATED 26-12-2019

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17 hours ago, One and a half said:

What's the spec on the resistors, carbon, wire-wound or metal film? This Metal Film from Mouser is rated for 50ppm drift, so when push comes to shove, the resistor may not break down and the image should be pretty good.

 

Also found an article that explains when HPs can be connected directly to power amps, others require resistors as above. Interesting topic.

 

In my own designs, if a particular resistor is critical to SQ, then I use a high precision, expensive item, the lowest ppm drift item at a sensible price. The reason is not the drift number, but rather that the manufacture was far more 'careful'; that being needed to get the precision, with the 'side' benefit that all other behaviours should also be better.


Frank

 

http://artofaudioconjuring.blogspot.com/

 

 

Over and out.

.

 

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MQA


Roon ROCK (Roon 1.7; NUC7i3) > Ayre QB-9 Twenty > Ayre AX-5 Twenty > Thiel CS2.4SE (crossovers rebuilt with Clarity CSA and Multicap RTX caps, Mills MRA-12 resistors; ERSE and Jantzen coils; Cardas binding posts and hookup wire); Cardas and OEM power cables, interconnects, and speaker cables

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21 hours ago, AudioDoctor said:

 

same...

I bet we are not the only two here.. x-D


The man that hath no music in himself, nor is not moved with concord of sweet sounds, is fit for treasons, stratagems, and spoils. The motions of his spirit are dull as night, and his affections dark as Erebus. Let no such man be trusted. Mark the music.

                                                                          ―  William Shakespeare.

 

 

 

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On 1/12/2020 at 4:31 PM, AudioDoctor said:


I see that mentioned a lot when researching this. It may be headphone/amp specific. Lukasz said nothing about a resistor needed when connecting the Susvara to his 211 Pacific mono block amps. 

This may very well be the case depending upon the HPs and the amps. Follow his advice, but be prepared to experiment for the best sound. Audio transformers aren't always well understood. They do not teach much about them these days, and they have always been a bit of a black art= even when they were mainstream.


Forrest:

Win10 i9 9900KS/GTX1060 HQPlayer4>Win10 NAA

DSD>Pavel's DSC2.6>Bent Audio TAP>

Parasound JC1>"Naked" Quad ESL63/Tannoy PS350B subs<100Hz

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